ANN ARBOR, Mich. (AP), Jun 24 - An Ann Arbor merchant who inherited a massive safe with no key - and no clue of its contents - promised to share whatever was inside to anyone who cracked it.

AnnArbor.com reports the owner and a determined safecracker will split the spoils: Two opal gemstones labeled $250 apiece. The 4-ton safe at the Tower Mini Market was ripped open Friday by Pat Rabchun and others using a saw, torch and semi-truck.

Market owner Nabeel Gneym says locksmiths wanted as much as $1,000, so he offered it to adventurous amateurs.

Rabchun says the mystery wasn't worth solving but he had fun.

The owner of a jewelry store that once occupied the space bought the safe in the 1980s, but the combination and key were lost and the safe was left.